Steam trap



July 17, 1923. 1.462.144

J. MOREHEAD STEAM TRAP Fiked DBO- 30 1920 4 Sheets-Sheet 1 6 than July17, 1923.

I J. MOREHEAD STEAM TRAP File j Dec- 30 1920 4 Sheets-Sheet 2 4-glnvenloz G rte meg July 17, E923. 1.462.144

v J. MOREHEAD STEAM TRAP Filed Dec. 30 1920 4 Sheets-Sheet 5 n 6 6? I.zv

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July 17, 1923. 1,462,144

J. MOREHEAD STEAM TRAP Filed Dec. 30 1920 4 Sheets-Sheet 4 Patented July1 7, 1923.

JOHN MOEEHEAD, OF IDIJ'llRDITL,'IVIICI'IIIICT.AN

- STEAM TRAP.

Application filed. December 30, 192a Serial no. 433,989.

To all whom it may concern:

Beit known that. I, JOHNMO EHEAD,

"izen of the United Statesyresiding at De troit, county of Wayne,"Stateof Michigan, 5 have invented a certain new and'u'sefullmprovementinSteam Traps, and declare following to be a full, clear,and exactscription of the same, such as will enable others skilled in the art towhich it pertains to make and use the same, reference being lltLCltO theaccompanying drawings, which form a partof this specification.

My invention relates to steam traps shown in the accompanying drawingsand more particularly described in the follow n g speci-.

ficat-ion and claims.

The present invention is an improvement on the'steam trap shown anddescribed in my U. S. Patent #1352517, dated September 14, 1920,-and oneobject or the present invention is the elimination of the valve in theinner suspended chamber through which condensation passes to' the outerchamber other place and thenceback to the boiler or of discharge.

A further object of the'invention' is to provide-a fixed tank adapted'to receive con-x densation for delivery to "the trap which may he ofrelatively small capacity, the purpose being to handle a relativelylarge ume of water with a comparatively small trap.

"With the the'combination and arrangement of p and in the details ofconstruction her after described and claimed, it beingunderstood thatchanges maybe made in the precise embodiment of the invention hereinclosed without departing from the spirit of the same.

In the accompanying drawings forming part of this specification Figure'lis a side elevation 'of'the trap and the receiving tank, showing the connections leading from a heating system to H the tank andfrom thelatterto the trap thence to the point of discharge!" I Figure 2 is a plan viewof the same. Figure 3 is a plan view partly in .sec

foregoing and other objects in view which will appear as the descript onproceeds, the invention further resides in taken on or about ll116.3 3of Figure 1, citwith the trap cover removed.

taken on or about line 44 of Figure 2, showing the suspended inner tankin its most elevated position, as when receiving condensation from aheating system. i

the de througlithe trap showing the suspended inner-tank in itslowermost positionas when cei'ving tank being shown in elevation; I

Figure 6 is a cross-sectional -v1ew"taken on or about line 66 of Figure3.

the tank,

Referring now to the placed upon the drawings: E

I "A, denotes the trap comprising a vertical ed to stand upon a suitablesupport. G, in-

D D, which are'in turn'secured to a'rock vided within the stationarychamber.

One end of the rock shaft -E extends through a'suitable packing gland inthe wall of the chamber and is fitted'on the outside of the trap with arocker-arm or weighted lever F, designed to normally vol- position,,until depressed by the weight of water or condensation delivered tothetank. Gr, is a pipe leading ;from a heating or other condensingsystem-(not shown) to. a stationary receiving tank H, through a 'T' G G isacheck valvein the pipe G arts ein-

dis-

to the heating system; I necting the T G with a checkvalve G in a pipe Gleading to a hotwater heater, trap,

G is a back pressure valve-in the pipe G and to control the pressurefrom theheatiiig sysenter the receiving tank. I is an overflow tion pipeleading from the tank H to a T I. from steam isbeing delivered to thetrap and the condensation discharged therefrom, the re-' Figure 7 is across-sectional-view of the" trap with the receiving tank eliminatedaathe condensation being delivered directly to letters of referencedicates a movable tank suspended from knife edge pivots d,"at the endof'therocker-armsv shaft E, journaled in suitablebearings pro- 1 maintainthe tank 'C, in its most elevated to prevent the return ofthe'condensati'on' G is'a nipple contem in order that the condensationmay Figure 4 is a vertical cross-sectionalview Figure 5 is a similar='cross'-sectional- VlGW stationary chamber 13, having legs B adapt i orother point of discharge (not shown);

other place of discharge (not shown).. 1

is a suitable back pressure valve for controlling the back pressure fromthe heating system. P is a check valve adapted to close against thereturn of water to the movable tank C.

K, indicates a pipe connecting the dome ofa steam boiler (not shown)with the trap A. and tank H. L, is a steam valve governing the deliveryofsteam through the pipe K, to the trap and also to the tank, in turncontrolled by a weighted lever L actuated through the movement'of theweighted lever F when the movable tank ()"descends under the weight ofthe condensation delivered thereto. The weighted lever F, is providedwith a slotted arm F, in which is secured an adjustable finger F adaptedto bear upon the weighted lever L to open the steam valve L, upon thetank C descending under the weight of the condensation delivered to thelatter. Steam is thus admitted through the pipe K, by way of the T Kthrough the pipe K to thetank H,-and also through the pipe K, T K, T Kand port K into the stationary chamber B of the trap.

M, indicates an air relief valve supported on a'nip le M projectingfromthe T K A pipe 11 may connect the valve to any suitable pointofdischarge. M is a weighted leverfor controlling the valve M fulcrumedat M on an arm extendingv upwardly from the valve chamber. The weightedlever M is in turn controlled by the movement of the weighted lever F;-

. there being an adjustable pin F supported in the slot of the member F,which is adapted to bear upon the lever M to open the air relief valveupon the discharge of the condensation from the movable tank C andsimultaneously with the closing of the steam valve L. \Vhen thecondensation has been discharged from the tank G, the weighted lever F,will operate to raise the tank to its uppermost position to againreceive condensation from the heating system.

N, is a pipe leading from the bottom of the stationary chamber B,connected by suitable fittings with the pipe G in advance of the backpressure valve G, (as shown in Figure 3 of the drawings) ,to drain thechamber of any water therein contained upon the water being dischargedfrom the removable tank.

13 is a bracket bolted to the frame in which is housed a pair of springs13*, carrying plungers B, adapted to receive the impact of the lever F,upon the latter shiftingfrom one position to the other of its movement,through the operation of the movable tank C;the weight of the latterbeing increased or diminished through the delivery or discharge ofcondensation to or from the tank. B are nuts for regulating the.'tensionof thesprings as may be required.

Having now indicated the several parts by reference letterstheconstruction and operation of the device will be readily understood. j

InFigures l to 6 the trap is shown in connection with a stationaryreceiving tank into which the condensationis initially delivered. Uponfilling the stationary [tank the condensation passes out through thepipe I to the movable chamber or tank of the trap, and upon overcomingthe action of the weighted lever F due to the increased weight of themovable tank through the delivery of condensation thereto, the lever Fwill tilt, whereupon the pin F carried by the member F contacts with theweighted lever L which governing the steam valve L, opens the latterthereby admitting steam from the boiler (not shown) through the pipe K,the pipe K and thence to the tank ;-also through the pipe K, the T K andport K to the trap. The condensation in the tank H, is thus forced outthrough the pipe at the bottom of the latter and passes thence throughthe T G, check valve G, pipe G past the back pressure valve G, to thetank of the hot water heater, or other place of discharge (not shown).Simultaneously therewith the condensation is also discharged from themovable tank C up through the pipe J, T I,,pipe 1 past the check valve land back pressure valve I to the tank of the hot water heater or otherplace of discharge. I

Upon the discharge of condensation from the movable tank C, the weightedlever supporting the latter willagain become opera tive to lift the tankto its uppermost position that it may agaiirreceive condensation fromthe stationary tank H, upon the latter overflowing through the pipe 'l'as previously explained. Upon the movable tank C being raised throughthe action of its weighted lever F, the weighted lever L (controllingthe steam valve) will be actupiping leading directly from a heatingsystem (notshown) to'the trap and from the trap to a boiler (notshown)-also' connections from the boiler for admission of boilerpressure to the trap. v

In this arrangement the trap is installed above the water level of theboiler ;the construction of the trap however is identical with the trapshown in the preceding views, the condensation from the heating systemis delivered directly to the trap throu h the pipe I, check vavlve I, TI, pipe II, into the movable tank C, which when filled with condensationsufliciently to overcome the weight of the lever I tilts therebypermitting the steam valve L to open under the action of its weightedlever. Boiler pressure is thereby admitted through the port K into thetrap ;'the

steam being delivered upon the top of the water or condensation in thetrap, forces the condensation up through the piped, through the pipe Icheck valve 1, pipe I, to the T 1 the condensation flowing thence bygravity through the pipe I to the boiler, and any condensation which mayhave gathered in the stationary chamber B will pass out through the pipeN, check valve N, pipe N TI and thence by gravity through the pipe I tothe boiler.

Upon the discharge of the condensation from the movable tank C, thelatter is restored to its initial position by the action of the weightedlever F, the steam valve L is thence closedby the operation of itsweighted lever and the air relief valve opened by the finger Fcontacting with its weighted lever M thereby relieving the trap of unduepressure after the discharge of the condensation, whereby water of con-.densation from the heating system may again freely enter the trap tooperate the movable tank as before explained.

Having thus described my inventionwhat vI claim is:

' wardly and out of the movable chamber by the steam to How by gravityto the boiler, and a valve for controlling the delivery of steam orboiler pressure to the trap actuated through the movement of the tank.

2. In a steam trap, a stationary chamber, a movable tank housed withinthe stationary chamber, a rock-shaft journaled withinthestationarychamber, rocker arms secured to the rock-shaft from which themovable tank is suspended, pipe connections for delivering condensationfrom a heating system to the movable tankand therefrom to a boiler, pipeconnections for-delivering steam from the boiler tozthe trap, a-valveforcontrolling the admission of steam through the pipe connections to thetrap, a weighted lever for controlling said valve, and a weighted armcarried by the rock-shaft adapted to support the movable tank untilovercome by the weight of condensation delivered to the tank, saidweighted arm being adapted to actuate the Weighted lever of the valvecontrolling the admission of steam to the trap, whereby the condensationmay be forced upwardly and out of said trap by the steam to pass bygravity to the boiler. s

3. In a steam trap, a stationary chamber, a rock-shaft journaled in thestationary chamber fitted with rocker arms, a movable tank suspendedfrom the rocker arms, a"

weighted arm carried by the rock-shaft, suitable piping for deliveringcondensation from a heating system to the trap, a check valve, avertical pipe leading downwardly from said piping and opening into themovable tank, awater pipe connection leading from said vertical pipe toa place of discharge, a-check valve in said water pipe, means fordelivering steam from a boiler to the trap whereby boiler pressure maybe es tablished in the trap and the water of condensation forced out ofthe trap up through the vertical pipe and thence through the water pipeconnection to theplace of discharge.

4. In asteam trap, a stationary chamber, a rock shaft journaled in thestationary chamber provided with rocker-arms, a movable tank suspendedfrom said rocker-arms, pipe connections for delivering steam to thetrap, pipe connections for delivering con-,

densation from a'heating system to the movable tank and therefrom toabo-iler, a steam valve for controlling admission of steam to the trapthrough said steam pipe connec- ,tion, a weighted lever for controllingsaid steam valve, a valve for relieving the pressure 1n said tankfollowing the discharge of the condensation therefrom controlled by aweighted lever, a weighted arm carried by and the weighted lever of therelief valve,

abracket bolted to said stationary chamber,

and a pair of springs housed in said bracket and spaced apart to receivethe impact of the weighted arm of the movable tank re sulting fromthemovement of said tank.

-5. In a steam trap, a stationary chamber, for actuating said valve atpredetermined a movable tank suspended Within the staintervals. tionarychamber, means for deliveringvrater In testimony whereof, I sign thisspecifiof condensation to the movable tank, means cation in the presenceof two witnesses.

5 1'01 delivering steam to the trap to force I J OHN MOREHEAD.

the Water of condensation upwardly and out Witnesses: of the movabletank, a valve for controlling E. THOMAS. the delivery of steam to thetrap and means BELLE GUENTI-IER.

